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Medium
- born digital7
- black-and-white photographs3
- archival materials2
- articles2
- correspondence2
- booklets1
- documentaries and factual works1
- instructional materials1
- interactive resource1
- letters (correspondence)1
- maps1
- newsletters1
- records1
- reports1
- study guides1
- texts (document genres)1
- timelines (chronologies)1
- web sites1